The ISIS takeover of the field took approximately 12 hours, and other rebels said it was by far the largest ISIS operation in Homs at the moment. The death toll is still not finalized, and is liable to continue to rise throughout the weekend.

That’s because over 350 people were at the side when ISIS attacked, including guards, paramilitary, and a lot of regular workers. In addition to the slain, roughly 250 others remain unaccounted for, many believed captured.

The Assad government has yet to offer full details from their side of the incident, but claimed at least 11 of the slain were civilian employees of the field. They condemned the ISIS raid as a “massacre.”